bench: add compositor pipeline benchmark for profiling #214

Job	Run time
Skit / Test	4m 40s
Plugins / Lint (Sherpa-ONNX Plugins)	57s
Plugins / Lint (NLLB)	17m 14s
Plugins / Format Check	19s
Skit / Build	7m 55s
UI / Test	23s
E2E / Playwright E2E	4m 44s
Plugins / Lint (Whisper)	40s
Skit / Lint (fmt + clippy)	3m 25s
Plugins / Lint (Simple Plugins)	44s
UI / Lint (TypeScript + ESLint)	45s
UI / Build	28s
All Checks Passed	0s
	42m 14s

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